FR2921709A1 - Thermostatic mixer and method for manufacturing such a mixer. - Google Patents

Thermostatic mixer and method for manufacturing such a mixer. Download PDF

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Publication number
FR2921709A1
FR2921709A1 FR0757902A FR0757902A FR2921709A1 FR 2921709 A1 FR2921709 A1 FR 2921709A1 FR 0757902 A FR0757902 A FR 0757902A FR 0757902 A FR0757902 A FR 0757902A FR 2921709 A1 FR2921709 A1 FR 2921709A1
Authority
FR
France
Prior art keywords
mixer
axis
casing
rigid
cartridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR0757902A
Other languages
French (fr)
Inventor
Frederic Robert Jager
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vernet SA
Original Assignee
Vernet SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vernet SA filed Critical Vernet SA
Priority to FR0757902A priority Critical patent/FR2921709A1/en
Publication of FR2921709A1 publication Critical patent/FR2921709A1/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/02Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263Construction of housing; Use of materials therefor of lift valves multiple way valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/002Actuating devices; Operating means; Releasing devices actuated by temperature variation
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/01Control of temperature without auxiliary power
    • G05D23/13Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1306Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids
    • G05D23/132Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element
    • G05D23/134Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of mixed fluid
    • G05D23/1346Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of mixed fluid with manual temperature setting means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/494Fluidic or fluid actuated device making

Abstract

This mixer comprises a tubular mixer body (2) and a thermostatic cartridge (3) which constitutes a pre-assembled assembly attached to the inside of the mixer body and which comprises a hollow envelope (4) made of plastic, in which are arranged thermostatic means (5) for controlling the temperature of the mixture of a cold fluid and a hot fluid. In order to fix the casing in the mixer body in a robust and simple manner, a rigid part (6) is interposed between them in a movable manner along an axis of displacement (ZZ) transverse to the longitudinal axis (XX) of the mixer body , being kinematically linked to the casing both in the direction of the axis of the mixer body and in rotation about this axis. This rigid piece is provided with a tapping (63) centered on the axis of displacement, which opens on a face (62B) of the rigid part, turned towards the mixer body, so as to cooperate by screwing with the threaded rod (71) a screw (7) for moving the rigid piece to press a bearing surface of this face against the inner face (2A) of the mixer body when the screw is inserted from the outside of the body mixer, through a transverse through hole (21) of the mixer body, smaller than the head (72) of the screw.

Description

The present invention relates to a thermostatic mixing valve, as well as to a method of manufacturing such a mixing valve.

The invention applies in particular to the sanitary field and is thus interested in mixing faucets, both for a sink or a shower for example, which allow to mitigate, that is to say, to mix an incoming current of cold water and an incoming stream of hot water to form a single outgoing water stream at a temperature intermediate between the respective temperatures of the hot water and the cold water. Such mixers are said to be thermostatic when they make it possible to regulate the temperature of the mixed water to a substantially constant and adjustable value, independently of the respective pressures and temperatures of the cold water and the hot water, and the flow rate of the water. mixed water, in a certain range of pressure and flow. This thermostatic function is provided by ad hoc means which are arranged essentially inside a hollow envelope, thus advantageously forming a pre-assembled assembly which is described as a thermostatic cartridge and which is set up with a alone holding inside the tubular outer body of the mixer. Examples of such a thermostatic cartridge and a mixing valve incorporating this cartridge are given in FR-A-2 774 740. In practice, it is necessary to fix the cartridge firmly inside the mixer body, in order to keep in place safely when circulating water through the mixer tap. In the case of a metal cartridge casing, a fixing by screws passing through the mixer body guarantees a particularly robust connection. However, such metal-shelled cartridges are significantly more expensive than plastic-shelled cartridges, the use of which is therefore preferred. Fixing the plastic cartridge casings, for its part, poses problems of mechanical strength in use. Indeed, a known possibility is to secure to the plastic casing a metal insert, used with a set screw to not put the cartridge across in the mixer body. This solution makes it possible to quickly and easily fix the cartridge inside the mixer body, but, because of the absence of rigid connection between the insert and the mixer body, it does not withstand heavy stresses, in particular particular related to the water pressure in the mixer body. Another known solution is to use more robust inserts, interposed between the mixer body and the cartridge casing. However, these systems have several small parts, which complicates their assembly to the rest of mixing valve, and / or consist of bulky and expensive parts: for example, FR-A-2 774 740 proposes to use either a large nut , which is directly screwed into the mixer body, a fork that is integrally reported transversely to the mixer body, from outside the latter. Such more robust systems require special arrangements for the mixer body, such as a peripheral thread for screwing the aforementioned nut or an extended slot to set up the aforementioned fork, and require to install the cartridge in the body mixer before setting up a temperature control knob, which complicates the assembly and maintenance of the mixer. The object of the present invention is to provide a thermostatic mixing valve, the attachment between the mixer body and the plastic casing of the cartridge is both more robust in use and less complicated to achieve. For this purpose, the subject of the invention is a thermostatic mixing valve, comprising: a generally tubular mixer body; a thermostatic cartridge, which constitutes a pre-assembled assembly attached to the inside of the mixer body and which comprises an envelope plastic hollow, in which are arranged thermostatic means for regulating the temperature of a fluid exiting the cartridge, obtained by mixing a cold incoming fluid and a hot incoming fluid, and - fixing means of the casing on the mixer body, characterized in that the fixing means comprise, on the one hand, a screw, provided with a threaded rod and an enlarged end head, and, on the other hand, a rigid piece, which is interposed between the mixer body and the casing movably along an axis of displacement transverse to the longitudinal axis of the mixer body, being kinematically connected to the casing at a time according to the directio n of the axis of the mixer body and rotating about this axis, and which is provided with a tapping centered on the axis of displacement, which opens on one side of the rigid part, turned towards the mixer body, and which is adapted to cooperate by screwing with the threaded rod to move the rigid piece to press a bearing surface of this face against the inner face of the mixer body when the screw is inserted from the outside of the body of mixing valve, through a transverse through hole of the mixer body, smaller than the head of the screw. The idea behind the invention is to interpose between the mixer body and the plastic casing of the cartridge rigid part defined above: before fixing the cartridge to the mixer body, this part is mobile following the axis of displacement relative to the cartridge, while being advantageously integrated therein to be reported together with this cartridge in the body of the mixer. The mobility of the rigid piece is used to, when the cartridge is attached to the interior of the mixer body, allow its plating against the inner face of the mixer body, under the action of the screwing of the screw inserted into its tapping. By tightening the screw whose head is in abutment against the outer face of the mixer body, the connection between the moving part and the mixer body is effectively stiffened along the axis of displacement, which, in combination with the kinematic connection between the casing and the piece both in the direction of the longitudinal axis of the mixer body and in rotation about the aforementioned axis, firmly immobilizes the casing with respect to the mixer body. The rigid structure of the moving part ensures effective immobilization of the envelope, even if this piece is pressed against the inner face of the body of the mixer on one side only. The invention thus provides a robust attachment of the cartridge casing with respect to the mixer body, in the sense that this attachment is resistant to static pressure and dynamic pressure phenomena, commonly referred to as pressure hammers, within the valve body. mixer. In addition, the advantageous use of a single screw and / or a temperature control lever preassembled in one piece to the cartridge facilitates the assembly and maintenance of the mixer. The fixing of the cartridge can thus be performed particularly quickly and economically, no particular tools being necessary. Regarding the mixer body, the presence of the hole of passage of the stem of the screw corresponds to a minimal arrangement. In addition, the rigid piece and the screw are completely concealed inside the mixer body, with the exception of the head of the screw, which is advantageously milled and positioned in a zone of the mixer body not exposed to the view. of the user, to ensure the aesthetics of the valve including the mixing valve according to the invention. According to other advantageous features of the thermostatic mixer according to the invention, taken individually or in any technically possible combination: the rigid part is able to be assembled and carried by the casing before returning the cartridge to the inside of the container; mixer body; - The mixer further comprises a temperature control knob, fixedly attached to the thermostatic means, and the rigid part is adapted to be assembled and carried by the envelope before returning the temperature control lever to the cartridge; - The rigid part defines, on its face opposite to the inner face of the mixer body, at least one bearing surface against a corresponding portion of the envelope, the support surface being adapted both to bind the rigid piece to the casing in rotation about the longitudinal axis of the mixer body and to slide against said corresponding part of the casing in the direction of the axis of displacement; the rigid part defines, on each of its two opposite faces in the direction of the longitudinal axis of the mixer body, at least one bearing surface against a corresponding part of the envelope, this bearing surface being adapted, both to bond the rigid piece to the casing in the direction of the longitudinal axis of the mixing body and to slide against said corresponding portion of the casing in the direction of the axis of movement; the bearing surface or surfaces delimited by one of the said two opposite faces of the rigid part cooperate with the corresponding portion of the casing over an angular extent, around the longitudinal axis of the mixer body, of at least 40 °; one of said corresponding parts of the envelope is deformable relative to the remainder of the envelope, so as to be applied to the corresponding bearing surface or surfaces with a constraint in the direction of the longitudinal axis of the body of mixing valve; - The rigid part is provided with locking means adapted to, in the absence of the mixer body, retain the rigid part vis-à-vis the envelope in the direction of the axis of movement; the rigid piece has an overall shape of fork, with two parallel branches, which extend in length in the direction of the axis of displacement, and a bridge which connects the two branches to one another at the one of their longitudinal ends and which is provided with tapping and the bearing surface against the inner face of the mixer body. The invention also relates to a method of manufacturing a thermostatic mixing valve, in which there is: - a generally tubular mixer body, and - a thermostatic cartridge, which constitutes a pre-assembled assembly and which comprises a hollow plastic envelope, in which are arranged thermostatic means for regulating the temperature of a fluid exiting the cartridge, obtained by mixing a cold incoming fluid and a hot incoming fluid, characterized in that a rigid piece is interposed between the mixer body and the casing attached to the inside of the latter, movably along an axis of displacement transverse to the longitudinal axis of the mixer body, while cinematically linking this rigid piece to the casing, both in the direction of the axis of the mixer body and in rotation about this axis, and in that a screw is then inserted inside the mixer body, through to a transverse through hole of the mixing valve body, smaller than a head of this screw, and screwing a threaded rod of the screw in a tapping of the rigid part, centered on the axis of displacement and opening on a face of this piece turned towards the mixer body, to press a bearing surface of this face against the inner face of the mixer body. The method according to the invention makes it possible to manufacture a thermostatic mixing valve as defined above. As explained above and explained in detail hereinafter, this process is fast, economical and reliable. The invention will be better understood on reading the following description, given solely by way of example and with reference to the drawings, in which: FIG. 1 is a schematic perspective view of a thermostatic mixing valve according to FIG. the invention; - Figure 2 is a longitudinal section of the mixer, according to the plane II of Figure 1; - Figure 3 is a cross section of the mixer on the line III-III of Figure 2; - Figure 4 is a partial longitudinal section of the mixer on the line IV-IV of Figure 3; and - Figure 5 is an exploded perspective view, at the same angle of observation as Figure 1, the mixer. In Figures 1 to 5 is shown a thermostatic mixer 1 for equipping, for example, a sanitary tap, such as a sink or shower faucet. The mixer 1 comprises, as a main external component, a mixer body 2 of tubular shape, extending in length about a central axis X-X. In the example considered in the figures, the mixer body has a section with a circular profile, centered on the axis X-X, and is open at both longitudinal ends. For convenience, the remainder of the description is oriented relative to the mixer body 2, so that the inner term designates a direction directed to the X-X axis, while the outer term designates a direction in the opposite direction. Similarly, the terms top and top designate a direction directed, along the axis XX, towards one of the longitudinal ends of the body of the mixer, namely the end directed towards the upper part of FIGS. 1, 2, 4 and 5 , while the lower and lower terms designate a direction of opposite direction.

As clearly visible in FIGS. 2, 3 and 5, the upper part of the mixer body 2 is traversed right through by a bored hole 21, connecting one another to the inner face 2A and the outer face 2B of the mixer body. On the inside of the hole 21, the latter is delimited by a cylindrical surface 211, with a circular base and centered on an axis ZZ radial to the axis XX, while, on the outside of the hole, the latter is delimited by a frustoconical surface. 212, centered on the ZZ axis and flaring outwardly from the cylindrical surface 211. The thermostatic mixer 1 also comprises a thermostatic cartridge 3 which, in the assembled configuration of the mixer, is housed essentially in the The cartridge 3 comprises, as a main external component, a plastic envelope 4. The casing 4 has a tubular shape and extends in length about a central axis substantially coincident with the axis XX when the cartridge 3 is assembled to the mixer body 2. At its lower end, the casing 4 is provided with fixedly, here by screwing, a coaxial sleeve 41 which extends the envelope downwards. In the exemplary embodiment considered in the figures, the remainder of the envelope 4 is in one piece, it being understood that, in a variant that is not shown, this envelope may consist of several parts secured to each other, by any appropriate means, of the same way that the sleeve 41 is fixedly secured to the casing 4. In the assembled configuration of the mixer 1, the casing 4, including its sleeve 41, is sealed inside the body of the mixer 2, with interposition radial seal seals between the outer face 4B of the casing and the inner face 2A of the body of the mixer, being noted that these faces 4B and 2A are substantially adjusted to each other at least on the one hand and other of these joints. The thermostatic cartridge 3 makes it possible to regulate the temperature of the water M leaving the cartridge and obtained by mixing incoming hot water C and cold incoming water F. To do this, in a manner known per se and as described in detail in FR-A-2 774 740 in the name of the present applicant, the cartridge 3 comprises ad hoc thermostatic means 5 arranged inside the casing 4. As clearly visible in FIG. 2, these means 5 comprise a drawer regulator 51 mounted movably along the axis XX between two extreme positions, in which it closes respectively the hot water inlet and the cold water inlet inside the drawer. In the two extreme positions mentioned above, the opposite axial ends of the spool 51 are supported against corresponding seats, respectively delimited by the envelope 4 and the sleeve 41. The cold water F and the hot water C reach the spool while passing radially. the envelope 4 which delimits for this purpose two respective series of peripheral lights 42 and 43, visible in part in Figure 5 and shown in dashed lines in Figure 2. These lights 42 and 43 are respectively fed with cold water and hot water from the outside of the casing 4, by ascending passages 22 and 23 delimited, in a manner known per se, by the body of the mixing valve 2 and shown only in dotted lines and schematically in FIG. of the drawer 51 relative to the casing 4, the amounts of cold water F and hot water C admitted inside the drawer are regulated, their mixture forming the outgoing water M.

The position of the spool 51 is controlled by a thermostatic element whose body 52, centered on the axis XX, is fixedly secured to the spool 51. This body 52 contains a thermally expandable material which, under the action of the heat of the water mixed M in which this body bathes, expands and causes the relative displacement, in translation along the axis XX, of a piston 53 centered on the axis XX. The end of the piston 53, opposite the body 52, is pressed against a stop 54 slidably mounted along the axis X-X, inside a bushing 55, with axial interposition of a spring 56 overtravel piston. The axial position of the sleeve 55 inside the casing 4, and thus the altitude of the piston stop 54, are adjustable by a set screw 57, which is centered on the axis XX and whose the upper end is splined so as to be rotatably connected to an operating handle, not shown in the figures. At its lower end, the adjusting screw 57 is threaded so as to cooperate with a complementary nut 58, centered on the axis XX, connected in rotation around this axis to the casing 4 by splines clearly visible in FIG. and pressed axially downwards against the sleeve 55. Thus, when the screw 57 is rotated on itself about the axis XX, the nut 58 is translated along this axis, which causes the corresponding drive of the sleeve 55, being noted that the thermostatic means 5 are completed by a return spring 59, which acts on the slide 51 opposite the deployment of the piston 53 relative to the body 52 of the thermostatic element and which is axially interposed between this drawer and the end sleeve 41 of the casing 4.

The structure and operation of the thermostatic means 5 are not described here further, it being understood that the reader will be able to refer to FR-A-2 774 740 for this purpose. To immobilize the casing 4 of the cartridge 3 relative to the mixer body 2, the mixer 1 comprises a fastener 6 and a screw 7 of the assembly of this part to the mixer body. As clearly visible in FIG. 5, the part 6 is in the form of a monoblock fork, comprising two parallel branches 61 connected to one another, at one of their longitudinal ends, by a bridge 62. 6 is intended to be interposed between the mixer body 2 and the casing 4, so that its bridge 62 is traversed by the axis ZZ and that its branches 61 extend in length parallel to the axis ZZ, on both sides of the XX axis. In cross-section along this axis XX, the part 6 thus has a U-shaped section, as can be seen clearly in FIG. 3. The part 6 is shaped to be carried mechanically by the envelope 4 and to be kinematically linked to the latter at a time. along the axis XX and in rotation about this axis. For this purpose, the inner face 61A of each branch 61 defines a flat surface 61AI, parallel to the plane containing the X-X and Z-Z axes. As shown in FIG. 3, this surface 61AI is applied against complementary outer flats 44 of the envelope 4, diametrically opposed with respect to the X-X axis. The plane-plane contact between each of the surfaces 61AI and the corresponding flat surface 44 effectively links the envelope 4 and the part 6 in rotation about the X-X axis.

In addition, the lower face 61D of each branch 61 defines a flat surface 61 DI extending in a plane perpendicular to the axis X-X. This surface 61D1 is applied axially downwards against a complementary shouldered portion 45 of the casing 4, as clearly visible in FIG. 4. The plane-plane contact between the surfaces 61D1 and the shouldered portions 45 effectively links, in the direction of the axis XX and downwards, the envelope 4 and the part 6. In addition, the upper face 61C of each branch 61 defines a surface 61 C1 of support down a resilient pallet 46 of the envelope 4.

This pallet 46 is integral with the rest of the casing in an elastically deformable manner, so that, in the absence of the branch 61, the pallet 46 extends from the rest of the casing towards the part shouldered corresponding 45, providing between them an axial distance slightly less than the thickness, that is to say, the dimension along the direction of the axis XX, of the branch 61 between its surfaces 61 C1 and 61D1. It is thus understood that, in the presence of the branch 61, each pallet 46 leans axially against the surface 61C1, which links along the axis XX and upwards the envelope 4 and the part 6, and maintains, by effect resilient, the surface 61 DI bears against the shouldered portion 45 corresponding.

Moreover, the cooperation between the inner faces 61A, upper 61C and lower 61D of the branches 61 and the parts 44, 45 and 46 of the envelope 4 allow the part 6 to be movable along the axis ZZ with respect to the envelope 4, by sliding. Advantageously, to allow the part 6 to be thus movably carried by the casing 4, while preventing its accidental release by inclination of the cartridge 3 vis-à-vis the vertical, the upper face 61C of each branch 61 delimits, at its free end, a heel 61 C2 projecting upwards relative to the level of the surface 61C1. By abutting in the direction of the Z-Z axis against the corresponding pallet 46, this heel 61 C2 blocks the piece 6 outwardly and prevents its release. The bridge 62 of the part 6 delimits a tapping 63 centered on the Z-Z axis and crossing the bridge from side to side.

The screw 7 comprises a threaded rod 71 whose thread is complementary to the tapping 63 and which has a maximum diameter equal to or slightly less than the inside diameter of the surface 211 of the hole 21. The screw 7 also comprises, at a longitudinal end of its rod 71, a countersunk head 72 wider than the rod 71. On its side directed towards the rod 71, the head 72 defines a frustoconical surface 721 complementary to the surface 212 of the hole 21. On its opposite side, the head delimits a fingerprint polygonal 722 for receiving the head of a tool for driving the screw in rotation on itself.

The manufacture of the thermostatic mixer 1 is as follows. Initially, the mixer 1 components are available in a configuration similar to that illustrated in FIG. 5. Thus, the mixing valve body 2 and the cartridge 3 are in the form of a pre-assembled assembly that can be handled in one piece. , part 6 and screw 7.

In a first step, the part 6 is assembled to the cartridge 3, positioning its branches 61 on either side of the flats 44 and introducing them between the shouldered portions 45 and the pallets 46, as indicated by the arrows PI on Figure 5, until the heels 6102 exceed the pallets 46 in the direction of the ZZ axis. Before or after having thus attached the part 6 to the cartridge 3, a temperature control lever, not shown, is advantageously fixed to the upper end of the adjusting screw 57: as the part 6 is connected in rotation to the envelope 4, this piece forms an angular indexing mark around the axis XX, to assemble quickly and accurately the aforementioned joystick to the cartridge 3. In a second step, the cartridge 3, optionally equipped with the joystick temperature control, and the part 6 carried by the cartridge are introduced inside the body of the mixer 2, generally along the axis XX, for example through the upper end of the body of the mixer, as indicated by the arrow P2 in Figure 5. The cartridge is then placed in the body of the mixer so that the hole 21 opens internally coaxially in the tapping 63. It is thus understood that, as the piece this 6 is connected in rotation to the casing 4, this piece indexes angularly around the axis XX the cartridge 3 inside the body of the mixer 2. In this configuration, the adjustment of the inner face 2A of the body of mixer 2 and the outer face 4B of the casing 4, at least at the seals interposed between them, immobilizes the casing with respect to the mixer body in all directions radial to the axis XX, in particular according to the ZZ axis. In a third step, the rod 71 is introduced from the outside of the body of the mixer 2 into the hole 21, as indicated by the arrow P3 in FIG. 5. Then, by rotating the bolt 7 itself, as indicated by the arrow P4 in FIGS. 2, 3 and 5, the threading of the rod 71 is engaged in the tapping 63. This screwing causes the head 72 to abut against the outer face 2B of the mixer body 2, by complementary engagement of the surfaces 721 and 212. Continuing then the screwing of the screw 7, the rod 71 drives the tapping 63, and thereby the whole piece 6, in a translational movement along the axis ZZ, away from the XX axis. The piece 6 then slides, in the direction of the Z-Z axis, against the flats 44 on its inner side, against the shoulder portions 45 on its lower side, and against the pallets 46 on its upper side. The outer face 62B is thus moved towards the inner face 2A of the body of the mixer, until a surface 62A1 delimited by this face 62A is pressed firmly against the face 2A, as indicated by the arrows P5 in the figures 2 and 3. In other words, the wall of the body of the mixer 2 surrounding the hole 21 is then clamped, along the axis ZZ, between the bridge 62 of the part 6 and the head 72 of the screw 7. The body The mixing valve 2 and the part 6 are then rigidly connected to each other, as shown in FIGS. 1 to 4, thereby immobilizing the casing 4 inside the mixer body in all directions. This rigid connection between the part 6 and the mixer body 2 is advantageously such that, combined with the rigid structure of this part, the latter contributes to locking the casing 4 of the cartridge 3 in rotation around the axis perpendicular to both at the XX axis and at the ZZ axis. The immobilization of the cartridge 3 inside the body of the mixer 2 is thus reinforced.

During operation of the mixer 1, the static and dynamic pressure phenomena inside the mixer body 2, which act generally along the axis XX and upwards, that is to say, which tend to emerge towards the the cartridge 3 above the mixer body are distributed by the part 6 at the contact between the surfaces 61D1 and the shoulder portions 45, that is to say at the level of an extended contact zone since each of these surfaces 61 DI cooperates with the envelope portion 45 on an angular sector a, centered on the axis XX, of at least 20 °, as indicated in FIG. 3. In this way, the mixing valve 1 supports severe operating conditions, without damage to the casing 4, or its fixed connection with the mixer body 2. If the cartridge 3 is to be changed, simply remove the screw 7 by unscrewing and replace, d in one piece, the cartridge, possibly equipped with the temperature control lever. A new cartridge is then put in place, as easily and quickly as the original cartridge. Thus, the maintenance of the mixer 1 does not require long and complicated adjustments and does not require special tools or specific training of the personnel concerned. Various arrangements and variants of the thermostatic mixer 1 described above, as well as its manufacturing process, are also possible. By way of examples: the presence of the fixing piece 6 and the screw 7 does not induce any significant stress with respect to the thermostatic cartridge 3, so that the latter can incorporate known arrangements; for example, a turbulator 8 may be provided around the body 52 of the thermostatic element (see Figure 2); - The geometry of the mixer body 2 is not limited to a cylindrical geometry, in the sense that, in general, a hollow and elongated shape, which has an inner face 2A allowing the rigid support of the part 6 and the locally adjusted reception of the envelope 4, is sufficient; in particular, the outer face 2B of the mixer body may have very diverse geometries, in particular according to the aesthetics of the valve to which this mixer body belongs; - An unrepresented variant of the elastic pallets 46 consists in replacing each of these pallets by a rigid bulge, dimensioned to overcome in force a local extra thickness of the upper face 61C of the corresponding branch 61 when the latter is assembled to the casing 4; the crossing of this extra thickness, similar to the heel 6102, thus constitutes a hard point, whose crossing during the assembly of the piece significantly limits the risks of subsequent release of this piece; - An alternative, not shown, of an arrangement of the inner face of the part 6, in order to lock this piece in rotation with respect to the casing 4, consists in providing the casing with a lug projecting from its outer face 4B, which is received in a complementary housing delimited in the inner face of the bridge 62 when the part 6 is assembled to the cartridge 3; and / or - other forms than that of a fork are possible for the part of the attachment 6; in particular, this part may have a ring or washer shape and, more generally, a rigid structure which has a tapping similar to the tapping 63 and which extends in the direction of the ZZ axis at least on one side of the XX axis.

Claims (10)

1.- thermostatic mixer (1), comprising: - a generally tubular mixer body (2), - a thermostatic cartridge (3), which constitutes a pre-assembled assembly reported inside the mixer body and which comprises a hollow shell (4) made of plastic, in which thermostatic means (5) for regulating the temperature of a fluid (M) issuing from the cartridge obtained by mixing a cold incoming fluid (F) and a hot incoming fluid (C), and - means (6, 7) for fixing the casing to the mixer body, characterized in that the fixing means comprise, on the one hand, a screw (7), provided with a threaded rod (71) and an enlarged end head (72), and on the other hand a rigid piece (6), which is interposed between the mixer body (2) and the casing (4) movably along an axis of displacement (ZZ) transverse to the longitudinal axis (XX) of the mixer body, being kinematically connected to the envelope both in the direction of the axis of the mixer body and rotating about this axis, and which is provided with a tapping (63) centered on the axis of displacement, which opens on one side (62B ) of the rigid piece, turned towards the mixer body, and which is adapted to cooperate by screwing with the threaded rod (71) to move the rigid piece to press a bearing surface (62B1) of this face against the inner face (2A) of the mixer body when the screw (7) is introduced from the outside of the mixer body through a transverse through hole (21) of the mixer body, smaller than the head (72) of the opinion.
2. A mixer according to claim 1, characterized in that the rigid part (6) is able to be assembled and carried by the casing (4) before bringing the cartridge (3) inside the mixer body ( 2).
3.- Mixer according to one of claims 1 or 2, characterized in that it further comprises a temperature control lever, fixedly attached to the thermostatic means (5), and in that the rigid part (6) is able to be assembled and carried by the casing (4) before returning the temperature control lever to the cartridge (3).
4.- Mixer according to any one of the preceding claims, characterized in that the rigid part (6) defines, on its face (61A) opposite the inner face (2A) of the mixer body (2), at least one bearing surface (61AI) against a corresponding part (44) of the casing (4), this bearing surface being adapted, at the same time, to bind the rigid part to the casing in rotation about the axis longitudinal (XX) of the mixer body and to slide against said corresponding part of the casing in the direction of the axis of displacement (ZZ).
5. A mixer according to any one of the preceding claims, characterized in that the rigid part (6) defines, on each of its two faces (61C, 61D) opposite in the direction of the longitudinal axis (XX) of the body mixer (2), at least one surface (61 C1, 61D1) bearing against a corresponding part (46, 45) of the casing (4), this bearing surface being adapted, at the same time, to bind the rigid piece to the casing in the direction of the longitudinal axis (XX) of the mixer body and to slide against said corresponding portion of the casing in the direction of the axis of displacement (ZZ).
6. A mixer according to claim 5, characterized in that the bearing surface or surfaces (61D1) defined by one (61D) of said two opposite faces (61C, 61D) of the rigid part (6) cooperate with the corresponding portion (45) of the casing (4) over an angular extent (a, a), about the longitudinal axis (XX) of the mixer body (2), of at least 40 °.
7.- Mixer according to one of claims 5 or 6, characterized in that one (46) of said corresponding parts (45, 46) of the envelope (4) is deformable relative to the rest of the envelope, so as to be applied to the corresponding bearing surface (s) (61C1) with a stress in the direction of the longitudinal axis (XX) of the mixer body (2).
8. A mixer according to any one of the preceding claims, characterized in that the rigid part (6) is provided with locking means (6102) adapted to, in the absence of the mixer body (2), retain the trapceride vis-à-vis the envelope (4) in the direction of the axis of displacement (ZZ).
9. A mixer according to any one of the preceding claims, characterized in that the rigid part (6) has an overall fork shape, with two parallel branches (61), which extend in length in the direction of the displacement axis (ZZ), and a bridge (62) which connects the two branches to one another at one of their longitudinal ends and which is provided with the tapping (63) and the bearing surface ( 62B1) against the inner face (2A) of the mixer body (2).
10.- A method of manufacturing a thermostatic mixing valve (1), in which is arranged: - a mixer body (2) generally tubular, and -a thermostatic cartridge (3), which constitutes a pre-assembly assembled and comprising a hollow envelope (4) made of plastic, in which thermostatic means (5) for regulating the temperature of a fluid (M) leaving the cartridge, obtained by mixing a cold incoming fluid, are arranged (F) and a hot incoming fluid (C), characterized in that a rigid piece (6) is interposed between the mixer body (2) and the casing (4) attached to the interior of the latter , movably along an axis of displacement (ZZ) transverse to the longitudinal axis (XX) of the mixer body, while kinematically linking this rigid piece to the casing, both in the direction of the axis of the mixer body and rotating about this axis, and that is then introduced a screw (7) inside the mixer body (2), through a transverse through-hole (21) of the mixing valve body, smaller than a head (72) of this screw, and screwing a threaded rod (71) of the screw into a tapping ( 63) of the rigid part (6), centered on the axis of displacement (ZZ) and opening on one face (62B) of this part turned towards the mixing valve body, until pressing a bearing surface (62B1) this face against the inner face (2A) of the mixer body.
FR0757902A 2007-09-27 2007-09-27 Thermostatic mixer and method for manufacturing such a mixer. Withdrawn FR2921709A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0757902A FR2921709A1 (en) 2007-09-27 2007-09-27 Thermostatic mixer and method for manufacturing such a mixer.

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
FR0757902A FR2921709A1 (en) 2007-09-27 2007-09-27 Thermostatic mixer and method for manufacturing such a mixer.
CN 200880108956 CN101809346B (en) 2007-09-27 2008-09-26 Thermostatic single-unit faucet and method for making such single-unit faucet
EP20080840450 EP2193296B1 (en) 2007-09-27 2008-09-26 Thermostatic single-unit faucet and method for making such single-unit faucet
BRPI0817436-9A BRPI0817436A2 (en) 2007-09-27 2008-09-26 Single Mixer Tap and One-Mixer Tap Manufacturing Process
PCT/FR2008/051718 WO2009050380A1 (en) 2007-09-27 2008-09-26 Thermostatic single-unit faucet and method for making such single-unit faucet
RU2010116384/06A RU2462638C2 (en) 2007-09-27 2008-09-26 Thermostatic water mixer tap and method of manufacturing such water mixer tap
US12/678,542 US8453942B2 (en) 2007-09-27 2008-09-26 Thermostatic single-unit faucet and method for making such a single-unit faucet
ES08840450T ES2360978T3 (en) 2007-09-27 2008-09-26 Thermostatic mitigator and manufacturing procedure of such mitigator.
DE200860005905 DE602008005905D1 (en) 2007-09-27 2008-09-26 One-piece thermostatic fitting and method for producing such a one-part thermostatic fitting
AT08840450T AT503951T (en) 2007-09-27 2008-09-26 One-piece thermostatic fitting and method for producing such a one-part thermostatic fitting

Publications (1)

Publication Number Publication Date
FR2921709A1 true FR2921709A1 (en) 2009-04-03

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FR0757902A Withdrawn FR2921709A1 (en) 2007-09-27 2007-09-27 Thermostatic mixer and method for manufacturing such a mixer.

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US (1) US8453942B2 (en)
EP (1) EP2193296B1 (en)
CN (1) CN101809346B (en)
AT (1) AT503951T (en)
BR (1) BRPI0817436A2 (en)
DE (1) DE602008005905D1 (en)
ES (1) ES2360978T3 (en)
FR (1) FR2921709A1 (en)
RU (1) RU2462638C2 (en)
WO (1) WO2009050380A1 (en)

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ITBS20110029A1 (en) * 2011-03-15 2012-09-16 Nuova Galatron Srl Thermostatic cartridge for mixer taps
WO2013083704A1 (en) 2011-12-07 2013-06-13 Vernet Thermostatic cartridge for the regulation of hot and cold fluids to be mixed
WO2013083703A1 (en) 2011-12-07 2013-06-13 Vernet Thermostatic cartridge for the regulation of hot and cold fluids to be mixed
EP2048564A3 (en) * 2007-10-11 2014-03-19 Grohe AG Adjustable regulating loop
WO2019138027A1 (en) 2018-01-12 2019-07-18 Vernet Instrumented thermostatic control device and mixer tap comprising such a thermostatic control device
WO2020104629A1 (en) 2018-11-22 2020-05-28 Vernet Thermostatic assembly, in particular a thermostatic cartridge
FR3092891A1 (en) 2019-02-20 2020-08-21 Vernet Thermostatic assembly, including thermostatic cartridge

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IT1403610B1 (en) * 2010-12-22 2013-10-31 Ruga Thermostatic mixing valve with incorporated flow diverter
ITBS20120043A1 (en) 2012-03-22 2013-09-23 Nuova Galatron S R L Thermostatic cartridge and corresponding faucet body
CN103075539B (en) * 2012-12-28 2014-09-17 珠海市舒丽玛温控卫浴设备有限公司 Single-handle dual-control constant-temperature valve core
FR3018366A1 (en) * 2014-03-07 2015-09-11 Vernet Thermostatic cartridge and method of assembling such a cartridge
CN107061773B (en) 2016-01-26 2019-05-14 科勒公司 Faucet assembly
FR3047534B1 (en) * 2016-02-08 2018-09-21 Vernet MANUFACTURING ASSEMBLY OF A CARTRIDGE FOR CONTROLLING COLD AND HOT FLUIDS TO MIX
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EP2048564A3 (en) * 2007-10-11 2014-03-19 Grohe AG Adjustable regulating loop
ITBS20110029A1 (en) * 2011-03-15 2012-09-16 Nuova Galatron Srl Thermostatic cartridge for mixer taps
WO2013083704A1 (en) 2011-12-07 2013-06-13 Vernet Thermostatic cartridge for the regulation of hot and cold fluids to be mixed
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US9342080B2 (en) 2011-12-07 2016-05-17 Vernet Thermostatic cartridge for regulating hot and cold fluids to be mixed
US9268341B2 (en) 2011-12-07 2016-02-23 Vernet Thermostatic cartridge for the regulation of hot and cold fluids to be mixed
WO2019138027A1 (en) 2018-01-12 2019-07-18 Vernet Instrumented thermostatic control device and mixer tap comprising such a thermostatic control device
WO2020104629A1 (en) 2018-11-22 2020-05-28 Vernet Thermostatic assembly, in particular a thermostatic cartridge
FR3089025A1 (en) 2018-11-22 2020-05-29 Vernet Thermostatic assembly, in particular thermostatic cartridge
FR3092891A1 (en) 2019-02-20 2020-08-21 Vernet Thermostatic assembly, including thermostatic cartridge
WO2020169642A1 (en) 2019-02-20 2020-08-27 Vernet Thermostatic assembly, in particular a thermostatic cartridge

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Publication number Publication date
RU2010116384A (en) 2011-11-10
RU2462638C2 (en) 2012-09-27
ES2360978T3 (en) 2011-06-10
EP2193296B1 (en) 2011-03-30
US8453942B2 (en) 2013-06-04
DE602008005905D1 (en) 2011-05-12
US20100206955A1 (en) 2010-08-19
EP2193296A1 (en) 2010-06-09
CN101809346B (en) 2012-02-29
CN101809346A (en) 2010-08-18
BRPI0817436A2 (en) 2015-06-16
AT503951T (en) 2011-04-15
WO2009050380A1 (en) 2009-04-23

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